Priming cup



O. RICE PRIMING CUP June 24 1924.

Filed March 22,

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Patented June 24, 1924.

ORLO RICE, 0F DETROIT, MICHIGAN.

PRIMING CUP.

Application led March 22, 1923. Serial No. 626,971.

To all whom t may concern Be it known that I, ORLo RICE, a citizen f the United AStates of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Priming Cups, of which the following is a specification, reference being had-therein to the accompanying drawings.

This invention relates to priming cups and it is the object of the invention to provide a priming cup having two valve members under a common contro-l for closing the'discharge passage of the cup whereby any loss of gas pressure through the priming cup is very positively prevented.

In the drawings Figure l is a view in side elevation and partial section of the improved rcup;

Figure 2 is a similar view of an alternative construction;

Figure 3 is a cross section on line 3-3 of Figure 2.

In these views, the reference character A designates the base or supporting member of the cup and B the cup proper which has detachable engagement with said base. The member A is formed with the central discharge passage a3 and comprises eXteriorly threaded end portions a and a for respective engagement with an engine casing (not shown) and by the cup member B and comprises further the intermediate polygonal nut portion a2. The member B has the cup forming depression b2 in its upper portion and has its lower por-tion reduced in diameter and formed with the interiorly threaded opening b3 for engagement with the part a of the base A. Said opening is adapted to communicate with the cup b2 by a port o which is loc-ated substantially midway of the height of the cup member B which registers with the passage a3 and port b, said stem having an integral conical valve member D upon its lower end adapted to seat upon the lower end of the base A and carrying at its upper end the detachable valve member E adapted to seat within the cup opening b2 marginally of the port b. Vhile the member E may be variously connected to the stem C, the construction shown provides said valve member with a threaded shank F adapted to be engaged in a tapped opening in the upper end of the stem C. G is a pin mounted in a transverse bore of the stem C illustrates.

and open the port B and passage a3 for av discharge of 1priming fuel from the cup b2.

' and clamped fast to said stem by the shank- F, said pin projecting sufficiently at each end above the portion a o-f the base, the upper end portion of the opening b3 accommodating the projecting ends of said pin.

the two valves D and E are adapted to be firmly engaged with their respective seats by screwing the cup member to raise the same relative to the base. When said valves are seated, the 'pin G is spaced slightly above the Lipper end of the base as Figure l To unseat said'valve members the member is rotated' to screw the same downwardly upon the base A. The initial effect of such an adjustment is to unseat the valve D and bring the pin Gr to bear upon the upper end of the base A. A continued turning of the member B then'acts to unseat the valve E.

In the alternative construction `shown in. Figures 2 and 8, a disk element I-I fast upon the stem h substituted for the pin G shown in Figure l, said disk being cut away as indicated at h2 at opposite sides thereof' to allow for a flow of the priming liquid downwardly past said disk. A further fea' ture of this modification lies in the forming of both the lower and upper valve members J and' J respectively separately from the stem hV andestablishing a screw'threaded connection between said valve members and the stem. Thereduced extremities ha ofthe which heat is dissipated to the atmosphere from the priming cup is increased by form"v ing the upper member B of the clip with one or more annular grooves K between which narrow ribs K are formed. Increasing the rapidity of heat 'radiation is desir-k able as under some conditions, the priming cups tend to become so hot that they ma not safely be grasped with the bare han for effecting control.

In its preferred form herein shown and described my improved test or priming cup, although particularly constructed for use In the use of the described priming cup,

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i projctiOn with internal combustion engines, is of course adapted to be used for various other purposes.

What I claim as my invention is l. In a priming cup, a discharge passage for a priming liquid, and control means for said passage adapted to close the same at two separa-te points.

2. In a priming cup7 ak discharge passage for a priming liquid, and means under a common control 'for closing said passage at two separate points thereof.

3. In a priming cup, a discharge passage having valve seats at two spaced points thereof, valves respectively engageable with said' seats, and a common means for seatingor unseating both valves.

4. In a priming cup, a discharge passage having reversel'y facing valve seats at two spaced points thereof, valves respectively engageable with said seats, and a common means for seating or unseating both of said valves.

5'.y A priming cupl comprising a body having a discharge passage for the priming liquid and comprising two parts, of valves controlling said passage and'` adapted to respectivelyseat upon said parts, and a stem connecting said valves, said parts being relatively movable vlongitudinally of said passage to seat or unseat said valves.

6. A priming cup comprising upper and lower parts having a discharge passage eX- tending through bothparts, thereof, said parts being., relatively movable loiigitudinally ofl said passage, valves respectively adapted to seatv upon said parts for controllingf said' passage, a stem extending through said. passage connecting said valves, and a y -upon said stem engageable with the-lowermost part to limit lowering ofthe two valves resulting from lowering of the uppermost part whereby the lowervalve memberis shifted. from its seat in the opening movement thereof, and the upper valve isopenedgby shiftingthe seat forming member fremfthe. valve.

7 A priming cup comprising a supporting lower member and a cupped upper member, said members having a screw threaded engagement and together forming a discharge passage `for apriming liquid, a stem extending within said passage, valves terminally carried by said stem reversely seatingupon said upper and lower members to,A control said passage, seating of' said valves'. being: eifected by screwing the cup forming member upwardly upon the supporting member.

8*. A priming cup comprising a body having a discharge passage for the priming liquid, of reversely seating valves controlling said passage at opposite ends thereof,

a stem connecting said valves extending through said passage, means for relatively adjusting the valves and their seats, and a projection upon said stem seating upon said cup and limiting the opening move-- ment of the lower valves.

9. A priming cup comprising a body having a discharge passage for the priming liquid and comprising two parts, of valves controlling said passage and adapted to respectively seat upon said parts, said parts having'screw threaded engagement providing for a relative movement thereof longitudinally of said passage to control both of said valves.

10. A priming cup comprising a body having a discharge passage for the priming liquid and comprising two parts respectively having valve seats, ofv valves controlling said passage and respectively engageable with said seats, and a stem connecting said valves through said passage, said parts having screw threaded engagement provided for a relative movement longitudinally of said passage to control said valves.

Il. A priming cup comprising a body having a discharge passage for the priming liquiid, said body comprising upper and lower parts, of valves controlling said passage and adapted to seat upwardly upon one of said parts and downwardly upon the other, a stem connecting said valves, and means upon said stem between said valves engageable with one of said parts subsequent to opening of the upwardly seating valve to eect opening of the downwardly seating valve, responsive to relative longitudinal movement. of .the parts.

12. A priming cup comprising a body lia-ving upper and lower parts, said body having a discharge passage for a priming liquid, of a valve seatingV upwardly upon one of said parts, a valve seating downwardly upon the other parts, the upwardly seating valve and downwardly seating valve being successively actuable to open position through relative longitudinal adjustment of said'parts.

In testimony whereofV I aliiX my signature.

ORL() RICE'. 

